This patch changes the way the ibmveth driver handles the receivebuffers. The old code mallocs and maps all the buffers in the poolsregardless of MTU size and it also limits the number of buffer pools tothree. This patch makes the driver malloc and map the buffers necessaryto support the current MTU. It also changes the hardcoded names of thebuffer pool number, size, and elements to arrays to make it easier tochange (with the hope of making them runtime parameters in the future).